1381219 has 12 divisors (see below), whose sum is σ = 1654576. Its totient is φ = 1129392.

The previous prime is 1381217. The next prime is 1381229. The reversal of 1381219 is 9121831.

1381219 = T₃₃₅ + T₃₃₆ + ... + T₃₅₇.

It is not a de Polignac number, because 1381219 - 2¹ = 1381217 is a prime.

It is a super-2 number, since 2×1381219² = 3815531851922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1381193 and 1381202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3517 + ... + 3889.

2^1381219 is an apocalyptic number.

1381219 is a deficient number, since it is larger than the sum of its proper divisors (273357).

1381219 is an equidigital number, since it uses as much as digits as its factorization.

1381219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 403 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

The square root of 1381219 is about 1175.2527387758. The cubic root of 1381219 is about 111.3664000728.

It can be divided in two parts, 13812 and 19, that added together give a palindrome (13831).

The spelling of 1381219 in words is "one million, three hundred eighty-one thousand, two hundred nineteen".